# encding=utf-8

"""
1.数据类型

集合[]
元组()
字典{}
"""


def test_type():
    # None 代表空类型
    a = None
    b = ""
    print(bool(a))
    print(bool(b))
    print(len(b))


def test_list():
    list_1 = ["A", 1, 'ss']
    print(list_1)


def test_dict():
    dict = {
        "name": "summit",
        "age": 18
    }
    print(dict)


if __name__ == '__main__':
    # test_type()
    #  test_list()
    test_dict()
